12 CARL CHRISTIiNSEN AND CARL SKOTTSESERG 



Area of distribution: Southern West Patagonia, Fuegia, Falkland Islands; 

 South Georgia; Masafuera. 



*ll. H. rugosum C. Chr. et Skottsb. nov. spec. 



Syn. H. iunbridgense of Gay and Phil.? Hemsl. 69; Johow 1893: 44, 1896: 172. 

 Fig. 4 a-f. 



Leptocionium rhizomate filiformi, longe repente; foliis remotis, stipitibus 

 erectis, filiformibus, glabris, omnino exalatis, saepe flexuosis, 3 — 4 cm longis. 



Fig. 4. a—f HymenophyUum rugosum C. Chr. et Skottsb. a well developed frond (no. 630); 



b leaf recalling H. Iunbridgense (no. 423); c f. lanceolata (no. 1175); d fragment of a, X 4; 



e sorus, X io; f ftiiina of c, X 4; g — h H. falklandicum Bak.; g two pinnae (no. 389), X 4; 



// sorus, X 10. All entire fronds in nat. size. 



Lamina formae typicae ovato-deltoidea vel ovato-lanceolata, 5 — 6 cm longa, 

 3 — 4 cm lata, brunnescente, perfecte plana, saepe curvata, subtus papillis bre- 

 vissimis ad rachidem venasque rugosa, tripinnatifida; rhachide flexuosa, alata, 

 alis denticulatis. Pinnis alternis, circ. 10-jugis, infimis plus minusve abbreviatis 

 vel subaequalibus, aequaliter pinnatifidis vel basi inferiore paulo excisis, supre- 

 mis minoribus distinctius inaequilateralibus. Pinnulis obliquis, inaequilateralibus, 

 in segmenta 3 — 4 divisis, marginibus ubique acute denticulatis. Venis distinc- 

 tissimis, nigriscentibus. Soris 1 — 8 pro pinna, praesertim in segmentis lateris 

 superioris pinnarum insidentibus. Indusiis liberis nee immersis nee stipitatis, 



